The OID_t structure defines a concrete type for an OID or a prefix of an OID; it is a component of type PrefixTableEntry.

 typedef struct {
   [range(0,10000)] unsigned int length;
   [size_is(length)] BYTE* elements;
 } OID_t;

length: The size, in bytes, of the elements array.

elements: An array of bytes that constitute an OID or a prefix of an OID.